Murfreesboro is a city in Pike County, Arkansas, United States. The population was 1,764 at the 2000 census. The city is the county seat of Pike County. Crater of Diamonds State Park is located just to the south. The crater is an eroded lamproite pipe where diamonds were discovered in 1906. 100,000 were found by 1933, and visitors to the park may still take away whatever they can find.
The guard cells surround each stoma in a plant cell. They regulate  the opening and closing of stomata to facilitate gas exchange and  control transpiration in plants.
The presence of chloroplasts in the guard cells mean photosynthesis will occur. This leads to an accumulation of glucose in daylight and the guard cells will absorb water by o â¦ smosis from the epidermal cells which lack chloroplasts and do not produce glucoes.n fact, they are the only epidermal cells that have chloroplasts that can do this. Usually, we think of photosynthesis as by Mesophyll cells. There is some theory that the manufacturing of sugar can work in conjunction with K+ to regulate water potential.